Collapsible concrete-form.



` W. C'. SIMPSUN. UOLLAPSIBLE CONCRETE FORM. Y

APPIICATION FILED JUNE 22,'1911.

Patented June 4, 1912.

2 SHEETS-SHEET 1.

@www/tofs W. C. SIMPSON. OLLAPSIBLE CONCRETE ORM.

' I APPLICATION FILED .TUNE 22, 1911. 1,028,294

' Patented June 4, 1912.

A fairy/lad l ITED sra,

To all whom t may concern.'

Be it known that I, WALTER a citizen `ofthe UnitedStates,lPunigsutawney,

C. SiMPsoN, residing at in the county of Jefferson and` State ofPennsylvania, have invented certain new and useful ImprovementsV in-Collapsible Concrete-Forms, of which" the following is a specification.

This invention relates to improvements in V loprtable'concrete molds',and hasparticular reference to a device of this character which isadapted to mold cur-b stones. i The principal object' of the presentinvention is to provide av simple and e'licient device of thischaracter, by means of whichy ,curb stones maybe molded in positionalong /highways drainage.

A still further object isvto provide an'ovel :construction of moldv forthis purpose; and means for-holding the mold in lposition at the pointwhere the stones are to be molded.

These .and other objects will be apparentV description when ltaken fromthe following in connection with the following specification and theaccompanylng drawings, but 1t 3Q will be -understoodithat changes in thespecie structure shown and descrlbed may be made within/the scope of theclaim without departing ,from the spirit of the4 invention.

ln the drawingsz-- Figure 1 is a sectional View ot'ya portion of aroadway showing my devicein use, the mold being shown in cross section,Fig. 2 is a side'elevation of the 'niold/, Fig. 3 is a top plan view,Fig. 4 is an end/elevation, Fig. 5 is a transverse section on the line5&5 of Fig. 3. Fig. 6 is a transverse section on the line (3--6 ofFig..3, Fig. 7 is a` top plan view of a portion of my mold in connection.with a previously molded stone, Fig. 8 is a cross section of a stonemolded with my device.

Referring particularly to the drawings, 10 and 1l represent the sides ofmy mold, which may be made ofany suitable material as wood or metal, andot' any suitable 5D length. Secured on the outer face of each ot thesides il() and '11 are the plates 12 and '13, the plates 1 2 beingbent-outwardly at opposite ends as at 14, and formed with verticalopenings. .'lhe plates 13 are formed 5'5'l'similarly to the plates l2except that one of theoutturned portions 14 is formed with aSpecification of Letters Patent.

Application led June 22; '1911.'

spaced relation I Patented June 4, 1912. serial No. 634,781.

downwardly extending portion 15 having aI threadedopening for thereception of a-setA ,serewlt The plates 12 and13 are secured to thesides 10 and 11^in a'vertical position, 60 and stakes '17 vare passedthrough the openings 1n the u per and lower ofthe outturned portions 14vand driven into the ground.. Ihere are 4 of these' set screwsrepresented 1n the drawing, two at each end ofthe mold, but if desiredthe plates 12may be formed?. in the same manner as the plate 13 and havethe set screws 16. These set screws are adapted to engage the stakes 17to hld the `mold'in a rigid position, the stakes preventmg movingsidewise, and the set screws preventing any verticalmovement thereof.

The sided() of the mold is f greater depth than the side 11 to providefor the formal tion of the proper incline tothe upper face 75 ofthestone bein molded.

To hold thesi es of the mold in proper provide aseries of plates 18,shown in detail in Fig., 6 which comprise' the central and the tongues21, which latter are arranged at suitable distance from the tongue 19 oneither side thereof. The distancebetween the lower end of the tongue 19and the head is slightly greater on one side than Iit is on ythe other,so that when the plate is engaged on-the sides of the mold as shown inFig. 6 the deeper side will engage be' tween the smaller tongue land,the 'large Vtongue on the side 'of greater length, thus 90 positioningthe bottom of the tongue 19 on a level with the bottom edges of thesides 10 and 11. In the outer face of each of the sides 1() and 11 areformed the grooves 22 for the reception of ythe tongues 21 to insure/95their proper positio From the foregoing it will be seen thats in the useof the device the mold is set up at the proper place, when the stakes 17are driven through the openings inthe plates 12 and 13 and into theground. The set screws 16 arey then tightened to hold 'the niold inplace.- The dividing and spacing clamp .plates are then positioned inproper relation on the sides 10 and 11, sov that the 105 mold will bedivided into a number of parts to form several stones atonee. When onesection 'of the curbing hits been molded the mold is removed and placedso that the portions 10 and 11 of the sides embrace the 110 end of theHnishcd section, a clamp 23 being placed. over the ends to hold themzintongue 19, the head 20 80l engagementtherewith. In this manner the nextsucceeding section will be in perfect -line with the already moldedsection. The

opposite ends 24 of the sides l0 and ll have the cutaway portions 25which are adapted to receive the correspondingly shapedends ofadditional sides, when it is intended to mold longer sections, at once,than the mold in useis capable of. lIn this instance one of theplateslSwill be placed over the interlocking mold,thus serving as a clamp tohold the sidesjof the mold together and to hold the ends of theadjoining molds.

' being of unequal depth whereby an inclined upper face is formed on thecurb, plates secured to the outer faces of the side members, said plates.being arranged vertically,

outstanding apcrtured portions formed4 on said plates, certain of saidplates having downturned threaded and apertured lipson one of saidoutstanding portions, stakes disposed, through the apertured outstandingnortions, said stakes adapted to be driven 1n the ground, set screws inthe said downturned lips Jfor engagement. with certainv f of saidstakes, and'plates havin@r a larger central tongue and 'shorter si etongues adapted to embrace the Vsides of the mold,

said sides having grooves for the reception of said smaller tongues, thespaces between the smaller tongues and the larger tongues being ofunequal lengths whereby the lower edge ofthe larger tongue will be levelwith the bottom of the mold.

In testimony whereof I affix my signature,

l in the presence of twowitnesses.

WALTER o; srMPsoN.

Witnesses:

T. B. MITCHELL, MiNNrE KENNnY.

